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The K7RA Solar Update

ARRL

Well-Known Member
Nov 15, 2008
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Excitement mounted a few days ago when new Solar Cycle 24 sunspot 1013 emerged, but two days later it was fading away, similar to other recent sunspot appearances. The sunspot number for February 24-26 was 12, 14 and 12. Today's number will likely be 0. Sunspot numbers for February 19-25 were 0, 0, 0, 0, 0, 12 and 14 with a mean of 3.7. The 10.7 cm flux was 68.9, 69.2, 70.6, 70.3, 70.8, 71 and 70.7 with a mean of 70.2. The estimated planetary A indices were 1, 3, 3, 3, 5, 6 and 3 with a mean of 3.4. The estimated mid-latitude A indices were 0, 3, 2, 3, 3, 6 and 2 with a mean of 2.7.



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